The present invention discloses a novel packaged terminal air conditioner (PTAC) system that is compact, leakless, and power-efficient and integrates an evaporating element that heats and evaporates the meltwater collected within a drain pan disposed of in the outdoor portion. The proposed PTAC system includes an air sealing frame configurable within the sleeve of the PTAC system to completely seal off air infiltration from the sidewalls of the sleeve. The air sealing frame configurable within the sleeve further provides sufficient insulation and prevents any thermal bridge creation and also insulates the sound that usually gets transmitted from the outdoor portion to the indoor portion of the PTAC system or sound that's experienced in the room. The proposed PTAC has a decreased protruding length of the indoor portion within the interior of the room due to the presence of the air sealing frame.

Provided is a wall-mounted air conditioner. The wall-mounted air conditioner comprises a casing; the casing internally comprises an air duct; the air duct comprises an air intake channel and an air output channel, which are connected to each other; the air duct is provided with an air inlet and an air outlet; at least a part of the air inlet faces the front face of the wall-mounted air conditioner; and a first included angle, which is between a central line of the air intake channel and a central line of the air output channel, is greater than or equal to 10 degrees and less than or equal to 85 degrees. Since at least a part of the air inlet of the wall-mounted air conditioner is positioned on the front face of the casing, it is not necessary for air in the environment to enter the air duct from directly above the casing.

Provided is a wall-mounted air conditioner. The wall-mounted air conditioner comprises a casing; the casing internally comprises an air duct; the air duct comprises an air intake channel and an air output channel, which are connected to each other; the air duct is provided with an air inlet and an air outlet; at least a part of the air inlet faces the front face of the wall-mounted air conditioner; and a first included angle, which is between a central line of the air intake channel and a central line of the air output channel, is greater than or equal to 10 degrees and less than or equal to 85 degrees. Since at least a part of the air inlet of the wall-mounted air conditioner is positioned on the front face of the casing, it is not necessary for air in the environment to enter the air duct from directly above the casing.

Provided is a wall-mounted air conditioner. The wall-mounted air conditioner includes a casing, an electric control component and a heat exchanger, and the casing is internally provided with an air duct; the air duct is provided with an air inlet and an air outlet; the air duct includes an air intake section and an air output section, which are connected to each other; at least a part of the air inlet is positioned on the front face of the casing; a mounting space is formed between a front panel of the casing and the air duct; the mounting space is positioned at the front portion of an interior space of the casing and close to a lower portion; the heat exchanger is arranged in the air duct; and the electric control component is arranged in the mounting space.

Provided is a wall-mounted air conditioner. The wall-mounted air conditioner includes a casing, an electric control component and a heat exchanger, and the casing is internally provided with an air duct; the air duct is provided with an air inlet and an air outlet; the air duct includes an air intake section and an air output section, which are connected to each other; at least a part of the air inlet is positioned on the front face of the casing; a mounting space is formed between a front panel of the casing and the air duct; the mounting space is positioned at the front portion of an interior space of the casing and close to a lower portion; the heat exchanger is arranged in the air duct; and the electric control component is arranged in the mounting space.